<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>欢迎登录</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        form{
            border: 1px solid black;
            width: 50vw;
            height: 40vh;
            line-height: 20vh;
            text-align: center;
            margin: 10vh auto;
        }
    </style>
</head>
<body>
    <div id="kj">
        <form action="/login" method="post">
            <p>
                昵称：
                <input type="text" name="account" id="account">
            </p>
            <p>
                <input type="submit" name="submit" id="" value="进入聊天室">
            </p>
        </form>
    </div>
</body>
</html>